According to MagnaFlow, the # MF50809 is the standard grade converter, while the # MF49296 is the OEM grade converter. The OEM Grade converters are specially formulated with a heavier wash coat and loaded with twice the amount of precious metals (platinum, palladium, rhodium) to provide a much stronger coverage and a Ceramic that's engineered for maximum airflow. MagnaFlow recommends going with the OEM Grade on high mileage vehicles, or vehicles that have a history of throwing check engine... view full answer...
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